/**
 * 文章目录插件 - 默认样式
 * @package wzml_mulu
 * @version 1.0.0
 */

/* ===== 容器 ===== */
.wzml_mulu-toc {
    position: fixed;
    top: 100px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    border: 1px solid #e8e8e8;
    background: #fff;
    overflow: hidden;
}

/* 右侧悬浮（默认） */
.wzml_mulu-toc[data-position="right"],
.wzml_mulu-toc:not([data-position]) {
    right: 0;
}

/* 左侧悬浮 */
.wzml_mulu-toc[data-position="left"] {
    left: 0;
}

/* ===== 动画过渡 ===== */
.wzml_mulu-toc.animating .wzml_mulu-toc-body {
    transition: width 0.25s ease, max-height 0.25s ease, opacity 0.25s ease, padding 0.25s ease;
}

.wzml_mulu-toc.animating .wzml_mulu-toc-label {
    transition: opacity 0.25s ease;
}

.wzml_mulu-toc.animating .wzml_mulu-toc-item {
    transition: color 0.15s ease, background-color 0.15s ease;
}

/* ===== 收缩态 - 竖排标签 ===== */
.wzml_mulu-toc-label {
    display: none;
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 4px;
    padding: 12px 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    background: inherit;
    border-radius: 6px;
    user-select: none;
    line-height: 1.6;
}

.wzml_mulu-toc.collapsed .wzml_mulu-toc-label {
    display: block;
}

.wzml_mulu-toc.collapsed .wzml_mulu-toc-body {
    display: none;
}

.wzml_mulu-toc.collapsed {
    border-radius: 6px;
}

/* ===== 展开态主体 ===== */
.wzml_mulu-toc-body {
    display: flex;
    flex-direction: column;
    width: 240px;
    max-height: calc(100vh - 140px);
}

/* ===== 标题栏 ===== */
.wzml_mulu-toc-title {
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 700;
    color: #333;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    background: inherit;
    border-radius: 6px 6px 0 0;
}

.wzml_mulu-toc-count {
    font-size: 12px;
    font-weight: 400;
    color: #999;
}

/* ===== 目录列表 ===== */
.wzml_mulu-toc-list {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    overflow-y: auto;
    flex: 1;
    scroll-behavior: smooth;
}

/* 嵌套列表缩进 */
.wzml_mulu-toc-list .wzml_mulu-toc-list {
    padding: 0;
    margin: 0;
}

/* ===== 目录项 ===== */
.wzml_mulu-toc-item {
    display: block;
    padding: 6px 16px;
    font-size: 14px;
    color: #666;
    cursor: pointer;
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.5;
}

.wzml_mulu-toc-item:hover {
    color: #0073aa;
    background-color: rgba(0, 115, 170, 0.05);
}

/* 当前高亮项 */
.wzml_mulu-toc-item.active {
    color: #0073aa;
    background-color: #f0f6fc;
    border-left-color: #0073aa;
    font-weight: 500;
}

/* ===== 层级缩进 ===== */
.wzml_mulu-toc-item[data-level="1"] { padding-left: 16px; font-weight: 600; font-size: 15px; }
.wzml_mulu-toc-item[data-level="2"] { padding-left: 24px; }
.wzml_mulu-toc-item[data-level="3"] { padding-left: 32px; }
.wzml_mulu-toc-item[data-level="4"] { padding-left: 40px; }
.wzml_mulu-toc-item[data-level="5"] { padding-left: 48px; }
.wzml_mulu-toc-item[data-level="6"] { padding-left: 56px; }

/* ===== 回到顶部按钮 ===== */
.wzml_mulu-toc-backtop {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
    border-top: 1px solid #e8e8e8;
    cursor: pointer;
    color: #666;
    font-size: 16px;
    flex-shrink: 0;
    user-select: none;
}

.wzml_mulu-toc-backtop:hover {
    color: #0073aa;
    background-color: rgba(0, 115, 170, 0.05);
}

.wzml_mulu-toc-backtop-arrow {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 10px solid currentColor;
    margin-right: 6px;
}

/* ===== 滚动条美化 ===== */
.wzml_mulu-toc-list::-webkit-scrollbar {
    width: 4px;
}

.wzml_mulu-toc-list::-webkit-scrollbar-track {
    background: transparent;
}

.wzml_mulu-toc-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 2px;
}

.wzml_mulu-toc-list::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ===== 响应式：移动端隐藏 ===== */
@media (max-width: 768px) {
    .wzml_mulu-toc {
        display: none !important;
    }
}